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Diamond Necklaces

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Item Ships From: USA
Gemstone: Diamond
18 Karat Yellow Gold Pave Diamond High Heel Pendant
Located in Scottsdale, AZ
Designer: custom design Material: 18K yellow gold Diamond: round brilliant cut = .46cttw Color: G Clarity: SI1 Dimensions: pendant measures 14 X 21.50mm Weight: 2.90 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

14k Classic Three Row Panther Necklace with Diamond Stirrups, App. 0.40 tcw
Located in Southport, CT
14k yellow gold necklace. This classic necklace is a three row panther style link, which centers an opposing set of stirrups, set with round faceted diamonds, approximately 0.40 TCW. The necklace has a hidden box...
Category

20th Century Unknown Retro Diamond Necklaces

Materials

Diamond, White Diamond, Gold, 14k Gold, Yellow Gold

Blue & White Enamel Diamond Sapphire Snake Necklace
Located in New York, NY
Blue and white enamel diamond sapphire snake necklace Round-cut diamonds of 1.20 carats, Marquise-shaped sapphires of 0.56 carat, 18 karat white gold, and silver with a tone of rose...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, Sapphire, Sterling Silver, 18k Gold, White Gold, Enamel

14k Rose Gold Brown Dazzling Diamond Pendant
Located in New York, NY
This are dazzling chocolate and white diamond pendant stamped in 14K rose gold. The dainty and striking chocolate diamonds have a fabulous champagne/brown color along with the sparkling white diamonds. This is a timeless piece and one of Amy's finest creations! ***** Details: ►Metal: Rose Gold ►Gold Purity 14K ►Chocolate Diamond Weight: 1.05 carat ►Chocolate Diamond Clarity: SI ►Natural White Diamonds: 0.76 carat ►Diamond Clarity: SI ►Total Item Weight: 3.4 grams ►Item No.: USPD837 ►Style: PD40023DB ►Estimated Retail Value: $ 4389 ***** FAQs: ►Free USA Shipping ►Ring comes with a free gift box ►Please note we cannot accept returns if ring...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Rose Gold

18 Karat Yellow Gold Pave Diamond Feather Drop Necklace
Located in Scottsdale, AZ
Designer: custom design Material: 18K yellow gold Diamond: round brilliant cut = 1.08cttw Color: G Clarity: VS2 Dimensions: necklace measures 18-inches in length Weight: 6.27 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Diamond Evil Eye Necklace in 14k White Gold
Located in Miami, FL
Style: Diamond Evil Eye Necklace Metal: White Gold Metal Purity: 14K Stones: Diamonds​​​​​​​ and Sapphire Diamond Clarity: VSI Total Carat Weigh...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

14 Karat White Gold Pave Diamond Pear Shape Necklace
Located in Scottsdale, AZ
Designer: custom design Material: 14K white gold Diamond: round brilliant cut = 0.61cttw Color: G Clarity: SI1 Dimensions: necklace measures 18-inches in length Weight: 3.28 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, White Gold, 14k Gold

M. Gérard Diamond Pendant Necklace / Brooch
Located in New York, NY
A versatile pendant necklace/brooch, created by M. Gérard in France in 1970s. The necklace is set with brilliant-cut diamonds, the side motif may be detached and worn as a brooch, an...
Category

20th Century French Diamond Necklaces

Materials

Diamond, 18k Gold

4 Carat Pave Diamond Rectangular Shape Pendant Necklace 18 Karat In Stock
Located in Boca Raton, FL
18k White Gold 4ctw Pave Diamond Rectangular Shape Pendant Necklace Material: 18k White Gold Diamond Details: There are approximately 4 carats of invisible set diamonds. There are Pr...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Green Tourmaline and White Diamond Omega Necklace in 18K White Gold
Located in Los Angeles, CA
Beautiful 24.38 ct. green tourmaline emerald cut with 0.06 ct. good quality white diamond rounds. Handmade in 18k white gold with an omega chain.
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Tourmaline, White Gold

14.69 Carat Diamond Scalloped Tennis Necklace 18 Karat In Stock
Located in Boca Raton, FL
18k White Gold 14.69ctw Baguette & Round Brilliant Cut Diamond Scalloped Tennis Necklace Product: Baguette & Round Brilliant Diamond Necklace Material: 18k White Gold Diamond Detail...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Large Spider Lariat Necklace Yellow Gold Diamonds
Located in Los Angeles, CA
Prepare to embark on a daring journey of style and intrigue with the breathtaking Large Spider Lariat Necklace in Yellow Gold and Diamonds. This magnificent jewel, reminiscent of the...
Category

2010s American Artist Diamond Necklaces

Materials

Diamond, Yellow Gold

Heart Shape Halo Pendant Necklace, 1.05 Carats Total Round Diamond
Located in New York, NY
Showcasing a fashionable heart shape pendant necklace with glass encased in the middle featuring bezel set round cut diamonds and surrounded by a row of round diamonds in a halo desi...
Category

Late 20th Century Unknown Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

13 Carat Combine Mix Shape Diamond Necklace Certified
Located in New York, NY
Diamond Necklace: Carat Weight: 13.06 Carats Style: Combine Mix Shape Chains: 14 Karat Rose Gold Setting: Pave
Category

2010s American Diamond Necklaces

Materials

Diamond, 14k Gold, Rose Gold

18 Karat White Gold 0.99 Carat Ruby Diamond Pave Cross Pendant Necklace
Located in Boca Raton, FL
Material: 18k White Gold Diamond Details: Approx. 0.88ctw of round cut diamonds. Diamonds are G/H in color and VS in clarity Gemstone Details: Approx. 0.99ctw of round cut Ruby gemst...
Category

21st Century and Contemporary American Diamond Necklaces

Materials

Diamond, White Diamond, Ruby, 14k Gold, White Gold

14k White Gold Diamond Unique Heart Lariat Necklace 0.22 Carat
Located in Sherman Oaks, CA
Gorgeous, Unique Lariat Necklace Featuring Asymmetrical Heart & Drop Both Are Covered in Round Cut Pavé Diamonds Heart is 16 mm Wide x 15 mm Long Drop is 8 mm Wide and 18 mm Long (In...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

18 Karat White Gold Vintage Art Deco Rose Cut Diamond Collar Necklace
Located in Scottsdale, AZ
Designer: custom Material: 18K white gold Diamonds: round and pear rose cut = 3.49cttw Color: H / I Clarity: SI1-2 Dimensions: necklace measures 18-inches in length Weight: 26.6 grams
Category

20th Century Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Diamond Gold Pendent
Located in Scottsdale, AZ
This diamond encrusted 10K yellow gold pendent circa 1950 is the perfect timeless piece to add to your collection! Beautiful 10K gold is accompanied by 3 ...
Category

1950s Vintage Diamond Necklaces

Materials

Diamond, Gold

GIA Burma Red Ruby & Trillion Diamond Pendant Necklace in Platinum
Located in Los Angeles, CA
Gorgeous GIA 4.43 ct. purplish red ruby oval cabochon with 0.35 ct. good quality white diamond trillion. Handmade in platinum. Length is 18". GIA certificate included.
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Ruby, Platinum

1.41 Carat Round Blue Topaz & Diamond Yellow Gold Pendant Necklace
Located in Great Neck, NY
This Blue Topaz & Diamond Pendant is a stunning and timeless accessory that can add a touch of glamour and sophistication to any outfit. This pendant features a 1.41 Carat Round Bl...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Blue Topaz, 14k Gold, Yellow Gold

Rare Fancy 18 Karat Gold Gorgeous Double 2 Strand Large Diamond Necklace
Located in New York, NY
The Following Item we are offering is this Rare Important Radiant 18KT Gold Gorgeous Glittering and Sparkling Magnificent Fancy Double Strand Diamond Necklace. Necklace contains appr...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, Gold

Luca Carati 18K Yellow Gold Diamond Arabic Symbol Pendant Necklace 0.95Cttw
Located in New York, NY
This 18k yellow gold pendant necklace features brilliant diamonds 0.95cttw, with a beautiful satin yellow gold Arabic symbol for Allah. The pendant is on a delicate 18k yellow gold c...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, Yellow Gold

White 4k Gold in Black Rhodium Diamonds Large Spider Pendant Necklace jherwitt
Located in Los Angeles, CA
Introducing the exceptional SP301PD YGBR Limited Edition Spider Pendant, a sophisticated tribute to creativity and personal empowerment. For centuries, the spider has symbolized inge...
Category

2010s North American Artist Diamond Necklaces

Materials

Diamond, White Gold, Rhodium

14k White Gold 5.00cttw Round Cut Diamond by the Yard Chain Necklace
Located in New York, NY
The diamond by the yard chain necklace is a delicate and elegant piece of jewelry that exudes understated luxury. Measuring 34 inches in length, this chain necklace is long enough to...
Category

20th Century American Modern Diamond Necklaces

Materials

Diamond, Platinum

14 Karat White Gold Pave Diamond Flexible Kite Necklace
Located in Scottsdale, AZ
Designer: custom Material: 14K white gold Diamonds: 90 round brilliant cut = 0.90cttw Color: G Clarity: VS2 Dimensions: necklace measures 18-inches in length Weight: 6.01 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

TIFFANY & Co. Etoile 18K Gold Diamond Ball Pendant Necklace
Located in Los Angeles, CA
TIFFANY & Co. Etoile 18K Gold Diamond Ball Pendant Necklace Metal: 18K yellow gold Weight: 5.30 grams Chain: 16" Pendant: 11mm in diameter Diamond: 6 round brilliant diamonds, carat...
Category

2010s American Diamond Necklaces

Materials

Diamond, 18k Gold, Platinum

Luca Carati Diamond Flower Pendant Long Necklace 18K Rose & White Gold 0.87Cttw
Located in New York, NY
Beautiful Luca Carati diamond flower pendant necklace crafted in 18k rose gold and white gold. This necklace features a gorgeous display of brilliant round cut pave set diamonds weig...
Category

2010s Italian Modern Diamond Necklaces

Materials

Diamond, White Gold

14k White Gold Diamonds Large Spider Pendant Necklace jherwitt unique gift
Located in Los Angeles, CA
Introducing the captivating SP301PD WG Limited Edition Spider Pendant, a stunning embodiment of creativity and self-determination. Crafted with meticulo...
Category

2010s North American Artist Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

14 Karat White Gold Bezel Set Diamond Smile Necklace
Located in Scottsdale, AZ
Designer: custom design Material: 14K white gold Diamond: round brilliant cut = 0.32cttw Color: H Clarity: SI1 Dimensions: necklace measures 18-inches in length Weight: 3.22 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

Natural Rhodolite Garnet and Diamond Halo Pendant 3.30 Carats 14k Rose Gold
Located in Laguna Niguel, CA
It comes with the appraisal by GIA GG/AJP Rhodolite Garnet = 3 Carat ( 12 x 8 mm ) Cut: Pear Total Quantity of Garnet: 1 Primary Stone Color: Red Diamonds = 0.30 Carats Total Quantit...
Category

21st Century and Contemporary Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, Garnet, Rhodolite, Gold, 14k Gold, Rose Gold

TIFFANY & Co. Platinum 18K Gold Diamond Cruciform Cross Pendant Necklace
Located in Los Angeles, CA
TIFFANY & Co. Platinum 18K Gold Diamond Cruciform Cross Pendant Necklace Metal: Platinum and 18K gold Chain: 16" gold chain Pendant: 7mm wi...
Category

2010s American Diamond Necklaces

Materials

Diamond, 18k Gold, Platinum

0.41 Carat Pave Diamond Flower Necklace 18 Karat In Stock
Located in Boca Raton, FL
18k White Gold 0.41ctw Pave Diamond Flower Necklace Material: 18k White Gold Diamond Details: There are approximately 0.41 carats of Round...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Alexander 12.32 Carat Diamond Tennis Necklace 18k White Gold
Located in BEVERLY HILLS, CA
Beautiful and classic diamond tennis necklace, by Alexander Beverly Hills. 12.32 carats of round brilliant diamonds, approximately G/H color and VS clarity. 18k white gold, 13.38 gra...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, White Diamond, 18k Gold, Gold, White Gold

Soho Sterling Silver Turquoise Resin and Diamond Triangle Drop Pendant
By SOHO
Located in Scottsdale, AZ
Designer: Soho Material: sterling silver Diamond: round brilliant cut = 0.25cttw Color: H Clarity: SI1 Dimensions: pendant measures 30.5 x 19.90mm Weight: 6.90 grams
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Turquoise, Sterling Silver

White Diamond Round S-Links Necklace in 14K Yellow Gold
Located in Los Angeles, CA
Beautiful 4.00 ct. white diamond round necklace. Handmade in 14k yellow gold. Length is 16.5".
Category

21st Century and Contemporary Diamond Necklaces

Materials

White Diamond, Yellow Gold

Gucci Flora Yellow Gold Necklace with Diamonds YBB581842002
Located in Wilmington, DE
18k yellow gold White diamonds Double G and flower pendant Flower charm at the closure 31 diamonds, totaling approximately .12 carats Clasp closure 15" length adjustable to 16.5" Pen...
Category

2010s Diamond Necklaces

Materials

Diamond, Yellow Gold

Roman Malakov, 1.00 Carat Brilliant Round Cut Diamond Solitaire Pendant Necklace
Located in New York, NY
This simple and timeless pendant necklace showcases one brilliant round cut diamond weighing 1.00 carats, F color and SI3/I1 clarity. Mounted in a beautiful four prong setting. Made ...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, 18k Gold, White Gold

Melting Ice 18k Yellow Gold Tanzanite Drop Necklace by MadStone
Located in El Dorado Hills, CA
Specs: 18k yellow gold necklace with 1.25 carats of tanzanite and 0.15 carats of white diamond. Story: The Melting Ice collection by MadStone designer Kerri Halpern draws influence...
Category

2010s American Artisan Diamond Necklaces

Materials

Diamond, Tanzanite, 18k Gold, Yellow Gold

31.77 TCW Round Natural Diamond 18k White Gold Tennis Necklace
Located in Los Angeles, CA
Classic and versatile necklace that can be pulled together with any outfit. This show stopping array of round natural diamonds is in a prong setting and is lined up perfectly to crea...
Category

2010s American Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

Natural South Sea Pearl Diamond Necklace 14k W Gold Certified
Located in Brooklyn, NY
Fine Quality South Sea Pearl Diamond Necklace 18" 14k W Gold 11 mm Certified $15,950 221248 This is a Unique Custom Made Glamorous Piece of Jewelry! Nothing says, “I Love you” more...
Category

2010s American Diamond Necklaces

Materials

Diamond, South Sea Pearl, Gold

Clear Crystal Diamond Bracelet Pendant Necklace Set 14k White Gold
Located in New York, NY
This gorgeous pendant necklace and bracelet set is crafted in 14k white gold and encrusted with 4 round cut diamonds and clear crystals. Chain length: 16 Inches. Pendant size: 38mm. ...
Category

2010s American Modern Diamond Necklaces

Materials

Crystal, Diamond, 14k Gold, White Gold

Diamond Letter "M" Pendant Necklace 14k Gold 0.19 TCW Certified
Located in Brooklyn, NY
Diamond Letter "M" Pendant Necklace 18" 14k Gold 0.19 TCW Certified $1,950 121278 MADE IN ITALY Nothing says, “I Love you” more than Diamonds and Pear...
Category

2010s American Diamond Necklaces

Materials

Diamond, 14k Gold

14 Karat White Gold Mosaic Set Diamond A Necklace
Located in Scottsdale, AZ
Designer: custom Material: 14K white gold Diamonds: 39 round brilliant cut = 0.19cttw Color: G Clarity: SI1 Diamonds: 10 baguette cut = .10cttw Color: G Clarity: SI1 Dimensions: nec...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

Sophia D. 0.92 Carat Diamond Pendant Necklace
Located in New York, NY
Sophia D. platinum necklace composed of 0.92 carat cushion cut diamond pendant and 6 round diamonds with a total weight of 0.56 carats. The...
Category

2010s Art Deco Diamond Necklaces

Materials

Diamond, Platinum

Allegra Crescent Moon Pendant in 22k Gold, by Tagili
Located in New York, NY
The Allegra Crescent Moon Pendant is handcarved in 22k gold. The Crescent Moon features Tagili Designs signature finish, is intricately hand carved and finished with 3 diamonds aroun...
Category

2010s American Artisan Diamond Necklaces

Materials

Diamond, 22k Gold

Roberto Coin White Gold Cross Pendent with Diamonds 001857AWCHX0
Located in Wilmington, DE
Roberto Coin Cross Pendent with Diamonds 18k White Gold Diamonds 0.39 Carat Total Weight Chain Length 18" 001857AWCHX0
Category

2010s Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

4.40 Carat Rubellite and Diamond Necklace
Located in Carlsbad, CA
• 4.40 Carats of Rubellite • 2.10 Carats of Diamonds • 18K Gold • 16 Inches Gift box included
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Rubelite, White Gold

Mask Pendant in 18K Gold with Emerald & Diamond
Located in Brooklyn, NY
Sculptural Mask Pendant situating Brancusi’s modernity in conversation with West African sculptural tradition, featuring an eye set with a round cut emera...
Category

2010s Diamond Necklaces

Materials

Diamond, Emerald, 18k Gold

Hexagonal Amethyst Pendant with Diamond Halo 3.75 Carat and Chain in 14k Gold
Located in Austin, TX
Hexagonal is an unusual shape for a gemstone but this amethyst will definitely delight anyone’s taste for unique. The lovely amethyst was cut by an American gemstone artist and was s...
Category

21st Century and Contemporary American Modern Diamond Necklaces

Materials

Amethyst, Diamond, 14k Gold, Yellow Gold, Gold

4.10 Carats Total Fancy Shape Diamond Circle Pendant in White Gold
Located in New York, NY
A stylish pendant necklace showcasing a row of 16 bright round diamonds, set in an open-work, circular design. Diamonds weighs 4.10 carats total and are approximately G color, VS cl...
Category

21st Century and Contemporary American Contemporary Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

14 Karat White Gold Diamond Tennis Necklace
Located in Scottsdale, AZ
Designer: custom design Material: 14K White Gold Diamond: 114 round brilliant cut = 12.51cttw Color: G/H Clarity: VS2-SI1 Dimensions: necklace measures 20-inches in length Weight: 1...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, 14k Gold, White Gold

Roberto Coin Love Letter J Pendent with Diamonds 001634AYCHXJ
Located in Wilmington, DE
Roberto Coin Love Letter J Pendant with Diamonds 18kt Yellow Gold Diamonds 0.05 total carat weight 18″ Chain 001634AYCHXJ
Category

2010s Diamond Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

14k White Gold Diamonds Small Spider Pendant Necklace JHerwitt gift for her
Located in Los Angeles, CA
Prepare to be mesmerized by the hauntingly beautiful Spider Pendant, an embodiment of the sudden and captivating wonders that life unveils. Just like love, this pendant appears unexp...
Category

2010s American Artist Diamond Necklaces

Materials

Diamond, White Gold

Natural Amethyst Diamond Pendant with Chain 14k W Gold 15.51 TCW Certified
Located in Brooklyn, NY
Natural Finely Faceted Quality Amethyst Diamond Pendant With Chain 17.5" 14k W Gold 15.51 TCW Certified $5,975 216891 This is a Unique Custom Made Glamorous Piece of Jewelry! Nothi...
Category

2010s American Diamond Necklaces

Materials

Amethyst, Diamond, Gold

2.35 Carat Round Triple Circle Diamond Pendant Necklace
Located in New York, NY
2.35 Carat Round Triple Circle Diamond Pendant Necklace -Material: 18K White Gold; -Diamonds: Round Cuts, 2.35ct total; -Chain: 15.5 i...
Category

2010s Diamond Necklaces

Materials

Diamond, 18k Gold, White Gold

18K Flower Baguette Necklace halfway 5 Carats
Located in Great Neck, NY
Flower daisy necklace set in 18K white gold. The necklace is set with a cluster of baguette and round diamonds. The color of the stones are F, the clarity is VS1-VS2. The total diamo...
Category

21st Century and Contemporary Thai Modern Diamond Necklaces

Materials

Diamond, 18k Gold

David Webb Gold Emerald Ruby Diamond Necklace and Earclips
Located in New York, NY
The wide gold necklace composed of geometric hammered gold links, featuring a cabochon emerald and ruby, framed and accented by round diamonds, tog...
Category

Late 20th Century North American Diamond Necklaces

Materials

Diamond, Emerald, Ruby, Gold

Blue Sapphire and Diamond Pendant Necklace in 18k White Gold
Located in Los Angeles, CA
Gorgeous 2.62 ct. blue sapphire marquise with 0.87 ct. good quality white diamond rounds and marquise shapes. Handmade in 18k white gold. This necklace is a fun take on the "evil e...
Category

21st Century and Contemporary Diamond Necklaces

Materials

Diamond, Blue Sapphire, White Gold

Shop Vintage and Antique Diamond Necklaces on 1stDibs

Whether you're pairing an elegant drop necklace with an evening gown for a fancy dinner or layering a solitaire pendant with your favorite gold or silver chains, you can count on the fact that antique diamond necklaces will elevate any ensemble.

Pendant necklaces worn by royalty and nobles conferred wealth and prestige in ancient times. Wearing jewelry has since become far more widespread, and today, personal adornment is all about expression: Luxury diamond necklaces — Cartier diamond necklaces, Harry Winston diamond necklaces and other iterations — exude confidence and can symbolize the celebratory nature of a deep romantic relationship. (Diamond lockets, for example, which feature a motif that first emerged in the 1800s, are frequently shaped like a heart.) 

Diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands. From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone.

In the late 19th century, "King of Diamonds" Charles Lewis Tiffany — founder of famed luxury house Tiffany & Co. — purchased a 287-carat yellow diamond discovered in the Kimberely Mine in South Africa. The stone was the largest yellow diamond ever mined, and was fashioned by gemologist George Kunz into a cushion-cut brilliant of 128 carats. Kunz gave it a total of 90 facets: 48 on the pavilion, 40 on the crown, plus the table and culet. Breakfast at Tiffany’s fans may recognize the stone from promotional photos for the film — actress Audrey Hepburn wore it as part of the Jean Schlumberger-designed Ribbon Rosette necklace.

But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality. 

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

Grading aside, a beloved diamond necklace is going to deliver the perfect amount of sparkle and joy every time you put it on, whether it's an emerald and diamond necklace, a classic diamond choker or some other similar accessory.  

Find antique and vintage diamond necklaces today on 1stDibs.

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